| 1 | 1 | Balfour Beatty | 2,576 | 2,317 | n/a |
| 2 | 2 | Laing O'Rourke | 2,149 | 1,812 | 4,236 |
| 3 | 4 | Carillion | 1,400 | 795 | 5,206 |
| 4 | 96 | Amey | 1,174 | n/a | 1,493 |
| 5 | 3 | Galliford Try | 1,136 | 1,066 | 1,832 |
| 6 | 6 | Morgan Est | 799 | 575 | 799 |
| 7 | - | BAM Nuttall | 650 | n/a | 650 |
| 8 | 7 | Costain Group | 620 | 539 | 996 |
| 9 | 8 | Skanska UK | 575 | 513.9 | 1,481 |
| 10 | 9 | J Murphy & Sons | 433 | 420 | 455 |
| 11 | 48 | VINCI Construction | 393 | 31.9 | 1,962 |
| 12 | 12 | Kier Group | 381 | 246 | 2,374 |
| 13 | 10 | Black & Veatch | 347 | 395 | 2,237 |
| 14 | - | Tarmac Limited National Contracting | 312.5 | n/a | 312.5 |
| 15 | - | Birse Civils | 255.09 | n/a | 255.09 |
| 16 | - | VolkerFitzpatrick | 223 | n/a | 448 |
| 17 | 13 | Clancy Docwra | 202 | 230 | 202 |
| 18 | 19 | Colas Limited | 201 | 120 | 242 |
| 19 | 11 | Sir Robert McAlpine | 200 | 300 | 1,187 |
| 20 | 17 | Interserve Project Services | 183 | 148.3 | 770.7 |
| 21 | 54 | Daniel Contractors | 180 | 22 | 180 |
| 22 | 18 | Barhale Construction | 157.7 | 147 | 157.7 |
| 23 | 15 | North Midland Construction | 131 | 211 | 202 |
| 24 | - | Farrans (Construction) | 100 | n/a | 200 |
| 25 | 30 | W J Harte Construction | 91.23 | 72 | 91.23 |
| 26 | 34 | RJ McLeod (Contractors) | 88.45 | 66.7 | 88.45 |
| 27 | 20 | Buckingham Group Contracting | 85 | 110 | 92 |
| 28 | 31 | Alun Griffiths Contractors | 82 | 68 | 82 |
| 29 | 33 | VolkerStevin | 81.6 | 67.7 | 81.6 |
| 30 | 24 | JN Bentley | 79.7 | 95.6 | 95 |
| 31 | 38 | John Graham (Dromore) | 75 | 58 | 218 |
| 32 | 27 | Jackson Civil Engineering | 74 | 84 | 74 |
| 33 | 35 | Dyer & Butler | 72.3 | 63 | 72.3 |
| 34 | 32 | Ascot Environmental | 68 | 68 | 68 |
| 35 | 26 | J Breheny Contractors | 68 | 84.6 | 68 |
| 36 | 39 | Raynesway Construction | 65 | 54.2 | 65 |
| 37 | - | BEAR Scotland | 50 | n/a | 50 |
| 38 | - | Van Elle | 47 | n/a | 47 |
| 39 | 42 | DCT Civil Engineering | 44 | 38.09 | 44 |
| 40 | - | Osborne | 41 | n/a | 303.6 |
| 41 | - | Hydrock Group | 40.6 | n/a | 52.1 |
| 42 | - | Lagan Construction | 40 | n/a | 150 |
| 43 | - | Luddon Construction | 36 | n/a | 42.8 |
| 44 | 45 | A E Yates | 35.2 | 33.4 | 35.2 |
| 45 | 47 | George Leslie | 35.1 | 31.97 | 35.1 |
| 46 | 49 | J. Browne Construction Company | 34.67 | 30.6 | 34.67 |
| 47 | - | Rok Civil Engineering | 34.2 | n/a | 34.2 |
| 48 | 62 | I & H Brown Limited | 32.01 | 17.97 | 37.52 |
| 49 | - | Leiths (Scotland) | 29 | n/a | 58 |
| 50 | - | CJ Haughey Construction | 28 | n/a | 28 |
| 51 | - | Hall Construction Services | 28 | n/a | 54 |
| 52 | 61 | Highland Quality Construction | 26 | 18.7 | 26 |
| 53 | 59 | Eric Wright Civil Engineering | 25.1 | 19.9 | 25.1 |
| 54 | 53 | Cheetham Hill Construction | 25 | 24.15 | 25 |
| 55 | - | Entec UK | 25 | n/a | 61 |
| 56 | 60 | Fitzgerald Contractors | 24.92 | 19.7 | 24.93 |
| 57 | - | Byzak Limited | 24.13 | n/a | 40.22 |
| 58 | 55 | UCS Civils | 24 | 22 | 24 |
| 59 | 56 | Seymour Civil Engineering Contractors | 23.52 | 21.1 | 23.52 |
| 60 | 103 | Land Engineering (Scotland) | 23 | n/a | 38.2 |
| 61 | - | South West Highways | 23 | n/a | 85 |
| 62 | 46 | Forkers | 21.8 | 32 | 21.8 |
| 63 | 43 | Walters UK | 21.55 | 34.76 | 21.55 |
| 64 | - | J T Mackley & Co | 21 | n/a | 21 |
| 65 | 66 | Ashridge Construction | 20 | 13.4 | 20 |
| 66 | 67 | Dew Construction (Oldham) | 19.52 | 13.29 | 19.52 |
| 67 | - | Lewis Civil Engineering | 18.3 | n/a | 22.04 |
| 68 | - | Marshall Construction | 18 | n/a | 39 |
| 69 | 57 | Raymond Brown Construction | 18 | 21 | 38.9 |
| 70 | - | Pennant Civil Engineering | 15.54 | n/a | 15.54 |
| 71 | 63 | RJT Excavations | 15.41 | 17.08 | 15.41 |
| 72 | 100 | D Morgan | 15.1 | n/a | 22.5 |
| 73 | - | Concrete Repairs | 15 | n/a | 25.4 |
| 74 | 65 | Provian Construction | 14.57 | 14 | 30.44 |
| 75 | - | Bethell Construction | 14.1 | n/a | 76 |
| 76 | - | Crummock (Scotland) | 13.3 | n/a | 13.3 |
| 77 | - | D&E Mackay (Contractors) | 12.6 | n/a | 12.6 |
| 78 | 68 | The ERDC Group | 12.4 | 13 | 16.8 |
| 79 | - | Jones Brothers (Henllan) | 12.3 | n/a | 12.3 |
| 80 | - | Owen Pugh Contracts | 10.8 | n/a | 10.8 |
| 81 | 69 | Alpha Construction | 10.56 | 12.93 | 10.56 |
| 82 | - | HBS Construction | 10 | n/a | 20 |
| 83 | 82 | UBC Group | 10 | 5 | 35.74 |
| 84 | - | Kilmac Construction | 9.6 | n/a | 9.6 |
| 85 | 114 | Thomas Bow Group | 9.4 | n/a | 9.4 |
| 86 | - | Briggs Marine Contractors | 8 | n/a | 45 |
| 87 | - | Wyn Construction | 8 | n/a | 8 |
| 88 | - | YJL Infrastructure | 8 | n/a | 8 |
| 89 | 98 | CHAP Civil Engineering | 7.4 | n/a | 7.4 |
| 90 | 78 | Ritchie Brothers (Scotland) | 7.24 | 7 | 7.24 |
| 91 | - | Erith Group | 6.2 | n/a | 61.5 |
| 92 | - | Clachan Construction | 6.02 | n/a | 18.1 |
| 93 | 107 | Mayfield Construction Co. | 6 | n/a | 22 |
| 94 | - | Ross Shire Engineering | 6 | n/a | 19 |
| 95 | - | Earlshill Construction | 5 | n/a | 5 |
| 96 | - | Kelburne Construction | 5 | n/a | 5 |
| 97 | - | Pat Munro (Alness) | 4.55 | n/a | 17.92 |
| 98 | - | Underground Moling Services | 4.25 | n/a | 4.25 |
| 99 | - | Global Construction (Scotland) | 4 | n/a | 9 |
| 100 | 83 | Currall Lewis and Martin (Construction) | 3.5 | 4.2 | 4.2 |
| 101 | 90 | James Strang Limited | 3.08 | 2.5 | 6.36 |
| 102 | - | Carnon Contracting | 3 | n/a | 10 |
| 103 | 86 | Young Bros | 3 | 4 | 4 |
| 104 | 95 | Admor Civil Engineering | 2.7 | 1.35 | 2.7 |
| 105 | 93 | Omnis Construction | 2.1 | 1.9 | 2.5 |
| 106 | - | Bridge Civil Engineering | 2 | n/a | 2 |
| 107 | - | Civil Solutions (North West) | 2 | n/a | 2 |
| 108 | - | Coopers Civil Engineering | 2 | n/a | 2 |
| 109 | - | J & J E Contractors | 2 | n/a | 2 |
| 110 | 111 | Rodger (Builders) | 1.99 | n/a | 4.86 |
| 111 | - | Colin Brisoe Construction | 1.9 | n/a | 2.1 |
| 112 | - | Discovery Drilling | 1.9 | n/a | 1.9 |
| 113 | - | Engage Construction | 1.5 | n/a | 1.5 |
| 114 | - | Mansefield Construction | 1.5 | n/a | 1.5 |
| 115 | - | Birch Brothers (Kidderminster) | 1.29 | n/a | 1.29 |
| 116 | - | On-site Civils | 1.1 | n/a | 1.1 |
| 117 | - | Tusk Plant & Civil Enginering | 0.75 | n/a | 0.75 |
| 118 | - | Lawson Construction | 0.6 | n/a | 0.6 |
| 119 | - | Classic Masonry | 0.5 | n/a | 2.2 |
| 120 | - | Aspin Group | 0.4 | n/a | 8.4 |
| 121 | - | Equipe Training | 0.25 | n/a | n/a |
| 122 | - | A R Beattie Construction Services | n/a | n/a | n/a |
| 123 | - | BAM Ritchies | n/a | n/a | 45 |
| 124 | - | Bardon Hebrides | n/a | n/a | n/a |
| 125 | 97 | C A Blackwell(Contracts) | n/a | n/a | 76.5 |
| 126 | - | Cleshar Contract Services | n/a | n/a | n/a |
| 127 | - | Edburton Contractors | n/a | n/a | 6.6 |
| 128 | 101 | FJ Goodwin & Sons (Manchester) | n/a | n/a | n/a |
| 129 | 58 | Fox (Owmby) | n/a | 20.9 | n/a |
| 130 | - | Gtek Construction | n/a | n/a | 12 |
| 131 | 36 | Hewlett Civil Engineering | n/a | 62 | n/a |
| 132 | - | MacLean Ardgay | n/a | n/a | 2.3 |
| 133 | - | Markon Ltd Road Marking Contractors | n/a | n/a | n/a |
| 134 | 106 | May Gurney | n/a | n/a | 470.3 |
| 135 | - | McPhillips (Wellington) | n/a | n/a | 35 |
| 136 | - | MTM Construction | n/a | n/a | n/a |
| 137 | - | MWT Civil Engineering | n/a | n/a | n/a |
| 138 | - | Power Lines, Pipes & Cables | n/a | n/a | 2.21 |
| 139 | - | R. Lindsay & Co (Contractors) | n/a | n/a | n/a |
| 140 | - | Rocklift Limited | n/a | n/a | n/a |
| 141 | 23 | Roger Bullivant | n/a | 100 | n/a |
| 142 | 113 | Storie (Argyll) Limited | n/a | n/a | n/a |
| 143 | - | Tamdown Group | n/a | n/a | 72 |
| 144 | - | TRAC Engineering | n/a | n/a | n/a |